Do you need a chin strap for western pleasure?
If you're talking about a curb strap on a curb bit, then yes, it
is required. If you are talking about a curb strap for a snaffle
bit, then no, it is not required. Bosals do not require a curb
strap.
If you are talking about a chin strap for the western hat, no,
one is not required.
It is not required but I strongly recommend because with out it
the bit has too much movement that may confuse the horse.